There are 11 states in the United States that in the last 50 years instituted an income tax. So I looked at each of those 11 states over the last 50 years, and I took their current economic metrics and their metrics for the five years before they put in the progressive income tax... Every single state that introduced a progressive income tax has declined as an overall share of the U.S. economy.
Arthur LafferThere are several states that move from Karl Marx-like policies to Adam Smith-like policies and back again in a weekend. So for the states with huge volatility in their income tax policies over time, the differences in growth rates in those periods are really amazingly consistent with tax rates really mattering.
Arthur LafferThere are lots of other things that affect state growth besides state taxes. However, the reason I look at taxes is because these are policy variables that can be changed by state governments in order to get better results than they otherwise had.
Arthur LafferWith the shrinking of the US economy, and it's shrinking very rapidly, you not only have more money, but you also have fewer goods. That's a classic double-whammy on inflation.
Arthur Laffer